Our review of Book of Runes cuts through the marketing and looks at what matters: how it plays and how it pays. This is a Mancala Gaming release, sitting firmly in the a medium high volatility profile bracket and paying back 95% RTP. Visually it's built around a halloween and book of theme, with the action running on 5 reels and 10 paylines. Expect a hit frequency around 30%, which sets the rhythm of play. The maximum win sits at 5,000x, so there's serious upside on the table. Here's how it stacks up.
Written by Rachel Kim · Last updated: January 2026
At its core, Book of Runes is a game produced by Mancala Gaming, built around a halloween and book of theme and powered by 10 paylines across 5 reels. The result is a medium high-variance maths model paired with 95% RTP.
The mechanics are what make Book of Runes interesting. Look out for scatter symbols that unlock free spins and extra bonus rounds. Its medium high variance balances steady wins with the odd larger payout. All told, it's a solid entry in the Mancala Gaming catalogue.
At 95%, the RTP is slightly below the industry average of ~96%. While this is typical for many popular slots, players should be aware of the slightly lower theoretical return.
Medium-high volatility means wins come less frequently but tend to be larger when they hit. Players should be prepared for dry spells between bigger wins, requiring a moderate bankroll.
About 1 in 3 spins results in a win. This is a moderate hit frequency that balances win frequency with payout size.
Book of Runes features scatter symbols that can trigger free spins rounds. Landing the required number of scatter symbols anywhere on the reels activates the free spins feature, giving you extra chances to win without additional bets. During free spins, special modifiers may apply to boost your winning potential.
3.0 / 5 — Good
Book of Runes by Mancala Gaming is a solid offering that delivers good entertainment value. The 95% RTP combined with medium high volatility creates a well-balanced gaming experience.